Good bottle, does not spill or leak even under heavy pressure. I wish there was a bottle that would have less of that "water bottle smell". If I leave water in it overnight in any kind of heat it has quite a bit of that smell/taste. I just have to be good about keeping them rinsed out.

Stay away from these. They are extremely cheap. Caps are hard plastic and don't fit correctly. Nipple is extremely hard and difficult to get out. Spend the extra couple dollars and get decent bottles. These were a waste of money.